ZonePlant

State reference · West

Idaho

Idaho (ID) covers 5 primary USDA hardiness zones across 312 zip codes. Capital: Boise.


USDA hardiness zones in Idaho

Zone share is computed from the 312 zip codes within Idaho. The most common zone is the best starting point for state-wide guidance; check your local zip for microclimate accuracy.

State-wide baseline

Zone 6b covers the largest share of Idaho, with winter lows around -5°F to 0°F and a typical growing season of 190 days. Zone 6b guide →

Crops suited to Idaho

Crops whose recommended USDA zone range overlaps Idaho's dominant zones. 91 crops match.

Tree fruit

14 crops

See all 14 tree fruit →

Berries

21 crops

See all 21 berries →

Nuts

6 crops

Vegetables

40 crops

See all 40 vegetables →

Herbs

10 crops

See all 10 herbs →

Largest cities in Idaho

Cities ranked by population (GeoNames public-domain data). Each city has a curated planting reference with its USDA zone, frost dates, and recommended crops.

Curated zip pages in Idaho

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